<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Title</title>
  </head>
  <body>
    <!-- development - / - false - true - %NOEXIST% -->
    <h1>%MODE% - %BASE_URL% - %PROD% - %DEV% - %NOEXIST%</h1>
  </body>
</html>